US4054568AExpiredUtility

Thiazolo(5,4-f)quinoline-8-carboxylic acid derivatives

Assignee: SUMITOMO CHEMICAL COPriority: Oct 17, 1973Filed: Feb 25, 1976Granted: Oct 18, 1977

Est. expiryOct 17, 1993(expired)· nominal 20-yr term from priority

Inventors:Hideo Agui Toru Mitani Mitsuo Nakashita Eiichi Murayama Kousaku Okamura Takenari Nakagome Toshiaki Komatsu Akio Izawa Yasuko Eda

C07D 513/04

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Claims

Abstract

Thiazolo[5,4-f]quinoline-8-carboxylic acid derivatives having either the general formula (I): <IMAGE> (I) wherein R1 is a lower alkyl group, a lower alkenyl group or a benzyl group; or the general formula (III-a): <IMAGE> (III-a) WHEREIN R3 is a lower alkyl group and X is a halogen atom; and methods for the preparation thereof. The compounds of the general formula (I) are useful as antibacterial agents against gram-negative and gram-positive bacteria. The compounds of the general formula (III-a) are useful as antifungal agents against eumycetes and also as an intermediate in a peparation of the compounds of the general formula (I).

Claims

exact text as granted — not AI-modified

What is claimed is: 
     
       1. A compound of the formula (III) ##STR20## wherein R 2  is a lower alkylsulfonyl group or a halogen atom, R 3  is a lowr alkyl group and X is a halogen atom. 
     
     
       2. The compound of claim 1, wherein the compound is ethyl 2,9-dichlorothiazolo[5,4-f]quinoline-8-carboxylate-6-oxide. 
     
     
       3. The compound of claim 1, wherein the compound is ethyl 9-chloro-2-methylsulfonylthiazolo[5,4-f]quinoline-8-carboxylate-6-oxide.

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